I've read that they didn't really measure well. I think it was Stereophile.

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“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

It would be pretty hard to clone an older Shaninian type mainly because of the unique design of the passive radiators. I have an old pair of Obelisks and plan on upgrading the drivers and tweaking the crossover to suit the new drivers but would not try to build a pair. I certainly have enjoyed these speakers and the actual design of the cabinet is not that difficult, but the PRs would have to be bought from Shahinian unless you are willing to spend more time on designing/building PRs than making the whole rest of the speaker.
David Thatcher